The Non-invasive Physiological Activity Monitoring System (NiPAMS) project is being developed by the research group of Prof. Plant at McGill University. The system is based on vibrations detected by a six-degree of freedom MEMS accelerometer, placed at the xiphoid process of the sternum, using Vibrational Cardiography (VCG) technique. The aim is to build a non-invasive, continue and central system for blood pressure estimation using VCG data acquired experimentally. This thesis describes my contribution to the project, which is based on a lumped parameter model for cardiovascular system (CVS). A simple hydraulic CVS model was selected from literature. An equivalent electric model is obtained correlating blood flow rate to the current “through” electric elements, and blood pressure drop to the voltage drop “across” each element.